Listening device for hands-free system

Details Listening device for hands-free system Listening device for hands-free system

2006-08-08

2006-08-08

Tran, Sinh (Department: 2615)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Plural or compound reproducers

C381S389000, C381S086000

Reexamination Certificate

active

07088840

ABSTRACT:
A listening device for a hands-free system includes a bone conduction actuator and a holder for holding the actuator. The holder includes a first contact part for contacting the actuator to a body part, a second contact part protruded at a spaced apart location from the first contact part, and a pivot part between the first and second contact parts. The holder is supported such as to be rotatable around a shaft in the pivot part orthogonally to a plane containing the contact parts and the pivot part. Thus, provided is a listening device which uses a bone conduction actuator having a contact part which can be contacted to a surface of a human body with a constant and appropriate pressure so as to achieve a constant level of signal transmission irrespective of the differences in the shape of the body part or the movements of the user.

REFERENCES:
patent: 4150262 (1979-04-01), Ono
patent: 4654883 (1987-03-01), Iwata
patent: 6456721 (2002-09-01), Fukuda
patent: H2-86359 (1990-07-01), None
patent: 10-234713 (1998-09-01), None
patent: 2001-056693 (2001-02-01), None
patent: 2002-191469 (2002-07-01), None

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